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7.6 High

CVE-2026-70454 rsync 3.2.0 through 3.2.3 (openssl mode) and rsync-ssl through 3.4.4 (stunnel mode) contain a TLS certificate validation…

Description

rsync 3.2.0 through 3.2.3 (openssl mode) and rsync-ssl through 3.4.4 (stunnel mode) contain a TLS certificate validation vulnerability that allows on-path attackers to intercept encrypted sessions by presenting self-signed or otherwise invalid certificates. Attackers can exploit the failure to validate server TLS certificates against a trusted CA or verify certificate hostname matching to decrypt or tamper with rsync session content without detection by the client.

Affected products and versions

Product Affected versions Fixed in
rsync 3.5 earliest → < 3.5.0 3.5.0
rsync 3.4 earliest → 3.4.4 No fix stated

References

Timeline

  1. Published
  2. Last modified

Other CVEs of rsync

The 44 CVEs of rsync →
CVE-2026-119741 rsync < 3.5.2 Denial of Service via hash_search() Checksum Collisions 8.7 High CVE-2026-70452 rsync 3.1.0 before 3.5.0 contains an access control bypass vulnerability that allows remote attackers to circumvent… 9.1 Critical CVE-2026-70453 rsync before 3.5.0 contains an algorithmic complexity vulnerability in the hash_search() function that allows a remote… 8.7 High CVE-2026-70455 rsync 3.4.2 before 3.5.0 contains a denial of service vulnerability that allows a remote sender to exhaust system… 8.7 High
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